// Copyright 2015 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package pattern

import "regexp"

type regexpMatch struct {
	r *regexp.Regexp
}

func (m regexpMatch) Match(s string) bool {
	return m.r.MatchString(s)
}

func (m regexpMatch) String() string {
	return "regex:" + m.r.String()
}

// Regexp returns a regular expression-based pattern.
func Regexp(expr *regexp.Regexp) Pattern {
	return regexpMatch{expr}
}
